Meanings
Synonyms & antonyms
nounyour foster brother is a male who is not a son of your parents but who is raised by your parents
Similar
foster-brother
Broader
malemale person
Synonym sets from Open English WordNet, CC BY 4.0.
Cite this entry
APA
foster brother. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/foster%20brother
MLA
“foster brother.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/foster%20brother. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “foster brother,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/foster%20brother.
Source: foster brother on Wiktionary, CC BY-SA 4.0.